Patent · US Active

Sensor device for measuring a fluid concentration, and use of the sensor device

US10914675B2 · kind B2 · utility

0Cited by

4References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Mike Schwarz · Aspenhausiedlung, DE
Thomas Friedrich · Bietigheim-Bissingen, DE
Timon Brueckner · Reutlingen, DE

Key dates

Filing date	May 25, 2016
Grant date	Feb 9, 2021
Priority date	—
Expiry date	Oct 21, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/3166
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor apparatus having a sensor unit. The sensor unit including pixel assemblages on a substrate upper side of a substrate located on a lower side of the sensor unit; a cap, on the substrate upper side, which covers the pixel assemblages, a cavity being formed between the substrate upper side and the cap; a plurality of filters that are transparent to wavelength regions that differ from one another, exactly one pixel assemblage being associated with each filter; and the filters being on the cap so that the infrared radiation propagated through an absorption gap of the sensor apparatus and the upper side of the sensor unit is detectable, through the respective filter, by the pixel assemblage associated with the respective filter; and a coating made of a light-absorbing and/or light-reflecting material being configured at least locally on a part of the cap which is not covered by the filters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.